首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   43925篇
  免费   1865篇
  国内免费   35篇
  2020年   544篇
  2019年   668篇
  2018年   928篇
  2017年   901篇
  2016年   1001篇
  2015年   682篇
  2014年   850篇
  2013年   3878篇
  2012年   1557篇
  2011年   1589篇
  2010年   949篇
  2009年   1040篇
  2008年   1350篇
  2007年   1374篇
  2006年   1281篇
  2005年   1143篇
  2004年   1080篇
  2003年   1053篇
  2002年   1061篇
  2001年   1285篇
  2000年   1266篇
  1999年   977篇
  1998年   498篇
  1997年   493篇
  1996年   473篇
  1995年   469篇
  1994年   425篇
  1993年   426篇
  1992年   754篇
  1991年   722篇
  1990年   698篇
  1989年   654篇
  1988年   625篇
  1987年   595篇
  1986年   604篇
  1985年   683篇
  1984年   585篇
  1983年   515篇
  1982年   428篇
  1979年   579篇
  1978年   435篇
  1977年   399篇
  1976年   417篇
  1975年   456篇
  1974年   531篇
  1973年   543篇
  1972年   454篇
  1971年   390篇
  1968年   450篇
  1967年   401篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
13.
14.
We investigated motivational and cognitive processes of behavior change with respect to mammography screening. One hundred forty-two women (ages 40 and older) recruited from three worksites answered a 41-item questionnaire consisting of statements based on constructs from the transtheoretical model of behavior change. Principal-components analysis identified two factors: a six-item component representing positive perceptions of mammography (Pros) and a six-item component representing avoidance of mammography (Cons). Analysis of variance showed that Pros, Cons, and a derived Decisional Balance measure (Pros minus Cons) were associated with stage of mammography adoption. Results are consistent with applications of the model to smoking cessation. The model is also discussed as it relates to other theories of behavior change and as a general strategy for analyzing perceptual data pertinent to health-related actions and intentions for behavioral change.  相似文献   
15.
16.
17.
The authors tested effects of a 10-week group cognitive-behavioral stress management intervention among 100 women newly treated for Stage 0-II breast cancer. The intervention reduced prevalence of moderate depression (which remained relatively stable in the control condition) but did not affect other measures of emotional distress. The intervention also increased participants' reports that having breast cancer had made positive contributions to their lives, and it increased generalized optimism. Both remained significantly elevated at a 3-month follow-up of the intervention. Further analysis revealed that the intervention had its greatest impact on these 2 variables among women who were lowest in optimism at baseline. Discussion centers on the importance of examining positive responses to traumatic events--growth, appreciation of life, shift in priorities, and positive affect-as well as negative responses.  相似文献   
18.
19.
20.
Our aim was to explore the role of parents in the transmission of stereotypical body size attitudes and awareness of weight loss strategies to preschool children. Participants were 279 3‐year‐old children and their parents, who provided data at baseline and 1 year later. Parents completed self‐report body size attitude and dieting measures. Child weight bias and awareness of weight loss strategies were assessed through interview. Over time, negative associations with large bodies and awareness of weight loss strategies increased. Fathers’ attitudes prospectively predicted boys’ weight bias and awareness of weight loss strategies. Among girls, parental attitudes were less predictive. Findings confirm the importance of fathers in the development of boys’ body attitudes and inform prevention programmes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号